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Gondim DR, Cecilia JA, Rodrigues TNB, Vilarrasa-García E, Rodríguez-Castellón E, Azevedo DCS, Silva IJ. Protein Adsorption onto Modified Porous Silica by Single and Binary Human Serum Protein Solutions. Int J Mol Sci 2021; 22:9164. [PMID: 34502072 PMCID: PMC8430731 DOI: 10.3390/ijms22179164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/16/2021] [Accepted: 08/21/2021] [Indexed: 12/17/2022] Open
Abstract
Typical porous silica (SBA-15) has been modified with pore expander agent (1,3,5-trimethylbenzene) and fluoride-species to diminish the length of the channels to obtain materials with different textural properties, varying the Si/Zr molar ratio between 20 and 5. These porous materials were characterized by X-ray Diffraction (XRD), N2 adsorption/desorption isotherms at -196 °C and X-ray Photoelectron Spectroscopy (XPS), obtaining adsorbent with a surface area between 420-337 m2 g-1 and an average pore diameter with a maximum between 20-25 nm. These materials were studied in the adsorption of human blood serum proteins (human serum albumin-HSA and immunoglobulin G-IgG). Generally, the incorporation of small proportions was favorable for proteins adsorption. The adsorption data revealed that the maximum adsorption capacity was reached close to the pI. The batch purification experiments in binary human serum solutions showed that Si sample has considerable adsorption for IgG while HSA adsorption is relatively low, so it is possible its separation.
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Affiliation(s)
- Diego R. Gondim
- Centro de Tecnologia, Grupo de Pesquisa em Separações por Adsorção—GPSA—Departamento de Engenharia Química, Campus do Pici, Bl. 709, Universidade Federal do Ceará, Fortaleza 60455-760, CE, Brazil; (D.R.G.); (T.N.B.R.); (E.V.-G.); (D.C.S.A.); (I.J.S.J.)
| | - Juan A. Cecilia
- Departamento de Química Inorgánica, Cristalografía y Mineralogía, Facultad de Ciencias, Campus de Teatinos, Universidad de Málaga, 29071 Malaga, Spain;
| | - Thaina N. B. Rodrigues
- Centro de Tecnologia, Grupo de Pesquisa em Separações por Adsorção—GPSA—Departamento de Engenharia Química, Campus do Pici, Bl. 709, Universidade Federal do Ceará, Fortaleza 60455-760, CE, Brazil; (D.R.G.); (T.N.B.R.); (E.V.-G.); (D.C.S.A.); (I.J.S.J.)
| | - Enrique Vilarrasa-García
- Centro de Tecnologia, Grupo de Pesquisa em Separações por Adsorção—GPSA—Departamento de Engenharia Química, Campus do Pici, Bl. 709, Universidade Federal do Ceará, Fortaleza 60455-760, CE, Brazil; (D.R.G.); (T.N.B.R.); (E.V.-G.); (D.C.S.A.); (I.J.S.J.)
| | - Enrique Rodríguez-Castellón
- Departamento de Química Inorgánica, Cristalografía y Mineralogía, Facultad de Ciencias, Campus de Teatinos, Universidad de Málaga, 29071 Malaga, Spain;
| | - Diana C. S. Azevedo
- Centro de Tecnologia, Grupo de Pesquisa em Separações por Adsorção—GPSA—Departamento de Engenharia Química, Campus do Pici, Bl. 709, Universidade Federal do Ceará, Fortaleza 60455-760, CE, Brazil; (D.R.G.); (T.N.B.R.); (E.V.-G.); (D.C.S.A.); (I.J.S.J.)
| | - Ivanildo J. Silva
- Centro de Tecnologia, Grupo de Pesquisa em Separações por Adsorção—GPSA—Departamento de Engenharia Química, Campus do Pici, Bl. 709, Universidade Federal do Ceará, Fortaleza 60455-760, CE, Brazil; (D.R.G.); (T.N.B.R.); (E.V.-G.); (D.C.S.A.); (I.J.S.J.)
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2
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Zhang W, Cheng H, Peng S, Li D, Gao H, Wang D. Performance and mechanisms of wastewater sludge conditioning with slag-based hydrotalcite-like minerals (Ca/Mg/Al-LDH). WATER RESEARCH 2020; 169:115265. [PMID: 31710914 DOI: 10.1016/j.watres.2019.115265] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 10/12/2019] [Accepted: 10/31/2019] [Indexed: 06/10/2023]
Abstract
Extracellular polymeric substances (EPS) in wastewater sludge form a network structure that is highly hydrophilic and compressible. Thus chemical conditioning is always required to improve sludge dewaterability by changing the gelatinous structure of sludge flocs. Layered double hydroxides (LDH) are generally characterized by large surface area and high anion exchange capacity, so we prepared three types of hydrotalcite-like compounds (Ca/Mg/Al-LDHs) from a typical solid waste, blast furnace slag, using NaOH precipitation (giving LDHa), a hydrothermal method (LDHb), and NaOH-Na2CO3 precipitation (LDHc). The physicochemical properties of the three LDH were comprehensively characterized, and their effectiveness as sludge conditioners was evaluated. The results showed that LDH conditioning was able to promote sludge dewaterability, and conditioning efficiency was strongly dependent on LDH structural properties. LDH neutralized the negative charges onto sludge particles and interacted with EPS to increase floc strength. LDH also formed a skeletal structure that reduced sludge compressibility. In addition, there were interactions between the LDH surfaces and the OC-OH in EPS proteins, which altered the secondary structure of protein molecules, consequently increasing sludge dewaterability. The biomolecules of low-molecular-weight fractions (such as peptides and humic acids) in soluble EPS intercalated LDH. Both the surface complexation of organic matter containing carboxyl groups and the intercalation of small molecules in soluble EPS were responsible for EPS-LDH interactions. The combination of skeleton formation, electrostatic interaction, and EPS-LDH interactions resulted in compression of gel-like structure and improved sludge dewatering performance. We finally suggested a novel sludge treatment process that increases sludge dewaterability using slag-derived Ca/Mg/Al-LDH to condition the sludge, and it could be combined with pyrolysis to prepare multi-functional materials or bio-oil.
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Affiliation(s)
- Weijun Zhang
- School of Environmental Studies, China University of Geosciences, Wuhan, 430074, Hubei, China; Hubei Provincial Engineering Research Center of Systematic Water Pollution Control, Wuhan, 430074, Hubei, China.
| | - Haowan Cheng
- School of Environmental Studies, China University of Geosciences, Wuhan, 430074, Hubei, China
| | - Sainan Peng
- School of Environmental Studies, China University of Geosciences, Wuhan, 430074, Hubei, China
| | - Dandan Li
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Hongyu Gao
- State Environmental Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources, Institute of Resources and Environmental Engineering, Shanxi University, Taiyuan, 030006, PR China
| | - Dongsheng Wang
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, Hubei, China; State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
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3
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Liu Z, Jia Q, Zhao X, Li S, Shen J, Li X. Influences of Synthesis Conditions on the Formation of Methotrexate Intercalated Layered Double Hydroxides by Exfoliation-reassembly Route. Chem Res Chin Univ 2019. [DOI: 10.1007/s40242-019-8371-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Gambucci M, Gentili PL, Sassi P, Latterini L. A multi-spectroscopic approach to investigate the interactions between Gramicidin A and silver nanoparticles. SOFT MATTER 2019; 15:6571-6580. [PMID: 31364666 DOI: 10.1039/c9sm01110b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The comprehension and control of the interactions between nanoparticles and proteins at a molecular level are crucial to improve biomedical applications of nanomaterials and to develop nanosystems able to influence and regulate the conformational changes in proteins. In this work, we explore the interactions between Gramicidin A peptide (GramA) and dodecanethiol-stabilized small silver nanoparticles (D-AgNPs), paying particular attention to the effect on GramA conformation in POPC bilayers. D-AgNPs have been prepared to have dimensions (5 nm) and a hydrophobic nature compatible with the POPC lipid bilayer. Fluorescence, Raman and IR spectroscopies have been used to investigate both peptide conformation and its position inside the phospholipid bilayer. Results are discussed in terms of solvent exposure and conformation of GramA peptide.
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Affiliation(s)
- Marta Gambucci
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto, 8- 06123 Perugia, Italy.
| | - Pier Luigi Gentili
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto, 8- 06123 Perugia, Italy.
| | - Paola Sassi
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto, 8- 06123 Perugia, Italy.
| | - Loredana Latterini
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto, 8- 06123 Perugia, Italy.
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5
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Abstract
The hydrotalcite (HT) film is a promising bioactive coating for magnesium alloys. In the present study, we investigate the corrosion behavior of HT film in the simulated body fluid (SBF), and compare with which in NaCl solution. The HT film can provide a very plummy initial protection to the AZ31 alloy in SBF. The corrosion behavior of the HT film in the two solutions is quite different. When in 0.1 mol·L−1 NaCl solution, the film is dissolved gradually, and filiform corrosion is predominant after 3 days immersion. While in Hank’s solution, the thickness and composition of the film are changed. A corrosion products layer mainly consisted of Mg/Ca–PO43−/HPO42−, and minor of CaCO3 is deposited on the top of HT film, which enhances the barrier effect of the HT film. As a result, except for local pit corrosion at several active places, most of the area of the coated sample still remains integral even after immersion for 15 days. It is demonstrated that the HT film has better corrosion protection effect in SBF than in NaCl solution.
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Gondim DR, Cecilia JA, Santos SO, Rodrigues TNB, Aguiar JE, Vilarrasa-García E, Rodríguez-Castellón E, Azevedo DCS, Silva IJ. Influence of buffer solutions in the adsorption of human serum proteins onto layered double hydroxide. Int J Biol Macromol 2017; 106:396-409. [PMID: 28797808 DOI: 10.1016/j.ijbiomac.2017.08.040] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 06/19/2017] [Accepted: 08/04/2017] [Indexed: 11/18/2022]
Abstract
The adsorption of human immunoglobulin G (IgG) and human serum albumin (HSA) on a non-calcined Mg-Al layered double hydroxide (3:1 Mg-Al LDH) was studied in batch and fixed bed experiments, focusing on the effect of buffer solution and pH over sorbent uptake. Mg-Al LDH was synthesized and characterized by X-ray diffraction (XRD), N2 adsorption-desorption isotherms at -196°C, X-ray photoelectron spectroscopy (XPS), Zero point charge (pHzpc), particle size distribution and Fourier transform infra-red (FTIR). Batch adsorption experiments were performed in order to investigate the effects of pH on IgG and HSA adsorption with different buffers: sodium acetate (ACETATE), sodium phosphate (PHOSPHATE), 3-(N-morpholino) propanesulfonic acid (MOPS), 4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid (HEPES) and trizma-hydrochloric acid (TRIS-HCl). Maximum adsorption capacities estimated by the Langmuir model were 239mgg-1 for IgG and 105mgg-1 for HSA in TRIS-HCl buffer. On the other hand, the highest selectivity for IgG adsorption over HSA was obtained with buffer PHOSPHATE (pH 6.5). The maximum IgG and HSA adsorption uptake in this case were 165 and 36mgg-1, respectively. Fixed bed experiments were carried out with both proteins using PHOSPHATE buffer (pH 6.5), which confirmed that IgG was more selectively adsorbed than HSA on Mg-Al LDH and both could be fully recovered by elution with sodium chloride (NaCl).
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Affiliation(s)
- Diego R Gondim
- Universidade Federal do Ceará, Centro de Tecnologia, Departamento de Engenharia Química - Grupo de Pesquisa em Separações por Adsorção - GPSA, Campus do Pici, Bl. 709, CEP: 60455-760, Fortaleza, CE, Brazil
| | - Juan A Cecilia
- Universidad de Málaga, Departamento de Química Inorgánica, Cristalografía y Mineralogía, Facultad de Ciencias, Campus de Teatinos, 29071 Málaga, Spain
| | - Santângela O Santos
- Universidade Federal do Ceará, Centro de Tecnologia, Departamento de Engenharia Química - Grupo de Pesquisa em Separações por Adsorção - GPSA, Campus do Pici, Bl. 709, CEP: 60455-760, Fortaleza, CE, Brazil
| | - Thainá N B Rodrigues
- Universidade Federal do Ceará, Centro de Tecnologia, Departamento de Engenharia Química - Grupo de Pesquisa em Separações por Adsorção - GPSA, Campus do Pici, Bl. 709, CEP: 60455-760, Fortaleza, CE, Brazil
| | - José E Aguiar
- Universidade Federal do Ceará, Centro de Tecnologia, Departamento de Engenharia Química - Grupo de Pesquisa em Separações por Adsorção - GPSA, Campus do Pici, Bl. 709, CEP: 60455-760, Fortaleza, CE, Brazil
| | - Enrique Vilarrasa-García
- Universidade Federal do Ceará, Centro de Tecnologia, Departamento de Engenharia Química - Grupo de Pesquisa em Separações por Adsorção - GPSA, Campus do Pici, Bl. 709, CEP: 60455-760, Fortaleza, CE, Brazil
| | - Enrique Rodríguez-Castellón
- Universidad de Málaga, Departamento de Química Inorgánica, Cristalografía y Mineralogía, Facultad de Ciencias, Campus de Teatinos, 29071 Málaga, Spain
| | - Diana C S Azevedo
- Universidade Federal do Ceará, Centro de Tecnologia, Departamento de Engenharia Química - Grupo de Pesquisa em Separações por Adsorção - GPSA, Campus do Pici, Bl. 709, CEP: 60455-760, Fortaleza, CE, Brazil
| | - Ivanildo J Silva
- Universidade Federal do Ceará, Centro de Tecnologia, Departamento de Engenharia Química - Grupo de Pesquisa em Separações por Adsorção - GPSA, Campus do Pici, Bl. 709, CEP: 60455-760, Fortaleza, CE, Brazil.
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7
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Gu Z, Atherton JJ, Xu ZP. Hierarchical layered double hydroxide nanocomposites: structure, synthesis and applications. Chem Commun (Camb) 2016; 51:3024-36. [PMID: 25562489 DOI: 10.1039/c4cc07715f] [Citation(s) in RCA: 177] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Layered double hydroxide (LDH)-based nanocomposites, constructed by interacting LDH nanoparticles with other nanomaterials (e.g. silica nanoparticles and magnetic nanoparticles) or polymeric molecules (e.g. proteins), are an emerging yet active area in healthcare, environmental remediation, energy conversion and storage. Combining advantages of each component in the structure and functions, hierarchical LDH-based nanocomposites have shown great potential in biomedicine, water purification, and energy storage and conversion. This feature article summarises the recent advances in LDH-based nanocomposites, focusing on their synthesis, structure, and application in drug delivery, bio-imaging, water purification, supercapacitors, and catalysis.
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Affiliation(s)
- Zi Gu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia.
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8
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Giugliarelli A, Tarpani L, Latterini L, Morresi A, Paolantoni M, Sassi P. Spectroscopic and Microscopic Studies of Aggregation and Fibrillation of Lysozyme in Water/Ethanol Solutions. J Phys Chem B 2015; 119:13009-17. [DOI: 10.1021/acs.jpcb.5b07487] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Alessandra Giugliarelli
- Dipartimento di Chimica, Biologia e Biotecnologie and ‡Dipartimento di
Chimica, Biologia
e Biotecnologie and Centro di Eccellenza Materiali Innovativi Nanostrutturati
CEMIN, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Luigi Tarpani
- Dipartimento di Chimica, Biologia e Biotecnologie and ‡Dipartimento di
Chimica, Biologia
e Biotecnologie and Centro di Eccellenza Materiali Innovativi Nanostrutturati
CEMIN, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Loredana Latterini
- Dipartimento di Chimica, Biologia e Biotecnologie and ‡Dipartimento di
Chimica, Biologia
e Biotecnologie and Centro di Eccellenza Materiali Innovativi Nanostrutturati
CEMIN, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Assunta Morresi
- Dipartimento di Chimica, Biologia e Biotecnologie and ‡Dipartimento di
Chimica, Biologia
e Biotecnologie and Centro di Eccellenza Materiali Innovativi Nanostrutturati
CEMIN, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Marco Paolantoni
- Dipartimento di Chimica, Biologia e Biotecnologie and ‡Dipartimento di
Chimica, Biologia
e Biotecnologie and Centro di Eccellenza Materiali Innovativi Nanostrutturati
CEMIN, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Paola Sassi
- Dipartimento di Chimica, Biologia e Biotecnologie and ‡Dipartimento di
Chimica, Biologia
e Biotecnologie and Centro di Eccellenza Materiali Innovativi Nanostrutturati
CEMIN, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
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9
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Pang X, Sun M, Ma X, Hou W. Synthesis of layered double hydroxide nanosheets by coprecipitation using a T-type microchannel reactor. J SOLID STATE CHEM 2014. [DOI: 10.1016/j.jssc.2013.11.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Posati T, Benfenati V, Sagnella A, Pistone A, Nocchetti M, Donnadio A, Ruani G, Zamboni R, Muccini M. Innovative Multifunctional Silk Fibroin and Hydrotalcite Nanocomposites: A Synergic Effect of the Components. Biomacromolecules 2013; 15:158-68. [DOI: 10.1021/bm401433b] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Tamara Posati
- Laboratory MIST E-R, Via P. Gobetti
101, I-40129 Bologna, Italy
| | - Valentina Benfenati
- Consiglio
Nazionale delle Ricerche, Istituto per la Sintesi Organica e la Fotoreattività (CNR-ISOF), Via P. Gobetti101, I-40129 Bologna, Italy
| | - Anna Sagnella
- Consiglio
Nazionale delle Ricerche, Istituto per la Sintesi Organica e la Fotoreattività (CNR-ISOF), Via P. Gobetti101, I-40129 Bologna, Italy
| | - Assunta Pistone
- Consiglio
Nazionale delle Ricerche, Istituto per la Sintesi Organica e la Fotoreattività (CNR-ISOF), Via P. Gobetti101, I-40129 Bologna, Italy
| | - Morena Nocchetti
- Dipartimento
di Chimica, Università di Perugia, Via Elce di Sotto 10, 06123 Perugia, Italy
| | - Anna Donnadio
- Dipartimento
di Chimica, Università di Perugia, Via Elce di Sotto 10, 06123 Perugia, Italy
| | - Giampiero Ruani
- Consiglio
Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Via P. Gobetti 101, I-40129 Bologna, Italy
| | - Roberto Zamboni
- Consiglio
Nazionale delle Ricerche, Istituto per la Sintesi Organica e la Fotoreattività (CNR-ISOF), Via P. Gobetti101, I-40129 Bologna, Italy
| | - Michele Muccini
- Consiglio
Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Via P. Gobetti 101, I-40129 Bologna, Italy
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Facile synthesis of camptothecin intercalated layered double hydroxide nanohybrids via a coassembly route. Int J Pharm 2013; 454:453-61. [DOI: 10.1016/j.ijpharm.2013.06.043] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 06/11/2013] [Accepted: 06/20/2013] [Indexed: 11/18/2022]
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12
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Wu X, Wang S, Du N, Zhang R, Hou W. Facile synthesis of deoxycholate intercalated layered double hydroxide nanohybrids via a coassembly process. J SOLID STATE CHEM 2013. [DOI: 10.1016/j.jssc.2013.04.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Rescignano N, Tarpani L, Tiribuzi R, Montesano S, Martino S, Latterini L, Kenny JM, Armentano I. Protein encapsulation in biodegradable polymeric nanoparticles: morphology, fluorescence behaviour and stem cell uptake. Macromol Biosci 2013; 13:1204-12. [PMID: 23776101 DOI: 10.1002/mabi.201300140] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 04/03/2013] [Indexed: 11/12/2022]
Abstract
The synthesis and characterization of new biodegradable polymeric NPs loaded with bovine serum albumin marked with fluorescein isothiocyanate (FITC-BSA) is reported. The protein is encapsulated in poly(D,L-lactide-co-glycolide) (PLGA) NPs by the double emulsion method with subsequent solvent evaporation. The NPs display a spherical shape with a narrow size distribution and no aggregation is observed after drying. Steady-state and time-resolved fluorescence measurements appear to be a sensitive method to investigate the protein environment on the nanometer-scale. Finally, FITC-BSA-loaded NPs are rapidly internalized in stem cells. Interestingly, 25% cells were slightly positive after 28 days.
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Affiliation(s)
- Nicoletta Rescignano
- Materials Engineering Center, UdR INSTM, University of Perugia, Str. Pentima 4, 05100, Terni, Italy; Institute of Polymer Science and Technology, CSIC, Juan de la Cierva 3, 28006, Madrid, Spain
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14
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Sanderson BA, Sowersby DS, Crosby S, Goss M, Lewis LK, Beall GW. Charge density and particle size effects on oligonucleotide and plasmid DNA binding to nanosized hydrotalcite. Biointerphases 2013; 8:8. [PMID: 24706120 PMCID: PMC5849210 DOI: 10.1186/1559-4106-8-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Accepted: 02/27/2013] [Indexed: 11/10/2022] Open
Abstract
Hydrotalcite (HT) and other layered double metal hydroxides are of great interest as gene delivery and timed release drug delivery systems and as enteric vehicles for biologically active molecules that are sensitive to gastric fluids. HT is a naturally occurring double metal hydroxide that can be synthesized as a nanomaterial consisting of a brucite structure with isomorphous substitution of aluminum ions. These positively charged nanoparticles exhibit plate-like morphology with very high aspect ratios. Biomolecules such as nucleic acids and proteins form strong associations with HT because they can associate with the positively charged layers. The binding of nucleic acids with HT and other nanomaterials is currently being investigated for potential use in gene therapy; however, the binding of specific nucleic acid forms, such as single- and double-stranded DNA, has been little explored. In addition, the effects of charge density and particle size on DNA adsorption has not been studied. In this paper, the binding of different forms of DNA to a series of HTs prepared at different temperatures and with different anion exchange capacities has been investigated. Experiments demonstrated that HTs synthesized at higher temperatures associate with both single- and double-stranded oligomers and circular plasmid DNA more tightly than HTs synthesized at room temperature, likely due to the hydrothermal conditions promoting larger particle sizes. HT with an anion exchange capacity of 300 meq/100 g demonstrated the highest binding of DNA, likely due to the closer match of charge densities between the HT and DNA. The details of the interaction of various forms of DNA with HT as a function of charge density, particle size, and concentration are discussed.
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Affiliation(s)
- Brian A Sanderson
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA,
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15
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Mousty C, Prévot V. Hybrid and biohybrid layered double hydroxides for electrochemical analysis. Anal Bioanal Chem 2013; 405:3513-23. [DOI: 10.1007/s00216-013-6797-1] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 01/25/2013] [Accepted: 01/28/2013] [Indexed: 11/27/2022]
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16
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Wang Q, O’Hare D. Recent Advances in the Synthesis and Application of Layered Double Hydroxide (LDH) Nanosheets. Chem Rev 2012; 112:4124-55. [DOI: 10.1021/cr200434v] [Citation(s) in RCA: 2367] [Impact Index Per Article: 197.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Qiang Wang
- Chemistry Research Laboratory, Department of Chemistry,
University of Oxford, 12 Mansfield Road, Oxford, OX1
3TA, U.K
| | - Dermot O’Hare
- Chemistry Research Laboratory, Department of Chemistry,
University of Oxford, 12 Mansfield Road, Oxford, OX1
3TA, U.K
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